4.5 Article

The German 19-item version of the Child Oral Health Impact Profile: translation and psychometric properties

Journal

CLINICAL ORAL INVESTIGATIONS
Volume 20, Issue 2, Pages 301-313

Publisher

SPRINGER HEIDELBERG
DOI: 10.1007/s00784-015-1503-7

Keywords

Child oral health impact profile; Oral health-related quality of life; Children; Questionnaire; Translation; Psychometric properties; Validation

Funding

  1. German Orthodontic Society (DGKFO) [49]

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Objectives This study seeks to develop and validate the 19-item German version of the Child Oral Health Impact Profile (COHIP-G19), an instrument to assess the oral health-related quality of life (OHRQoL) in children and adolescents. Materials and methods The 19 items of the original English-language COHIP were translated into German using an established forward-backward approach. For the assessment of the psychometric properties of the COHIP-G19, children and adolescents aged 7-17 years came from two samples: 112 patients were consecutively recruited at a university-based orthodontic clinic and 313 came from a convenience sample of students in public schools. Results Internal consistency of the COHIP-G19 was satisfactory in both populations (Cronbach's alpha, 0.78/0.80; average inter-item correlation, 0.16/0.17). The COHIP-G19 summary scores were correlated in the expected direction with a global oral health rating (r=0.46/0.40) and twomeasures for perceived general health (EQ-5D-Y: r=0.26/0.29; KIDS CREEN-27: r=0.40/0.33). While COHIP-G19 summary scores did not significantly differ with respect to the presence of caries or gingivitis (p>0.05), malocclusion and insufficient oral hygiene behavior were related to more impaired OHRQoL, represented in significantly lower COHIP-G19 summary scores in students in public schools (p<0.05), but not in orthodontic patients. Conclusions While this study revealed some potential to improve reliability and validity in scores of the German version of the COHIP-19, overall, the study proved the instrument has sufficient psychometric properties and is well comparable to the original English-language version. Clinical relevance The COHIP-G19 is a valid and reliable instrument to assess OHRQoL in German children and adolescents in clinical and community settings.

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